Hydraulic wrenches provide precision tools for the oil and gas chemical industry and Thyssen Hydraulics is a supplier of cost-effective bolt fastening solutions.Hydraulic tools are usually used in upstream and downstream oil fields, which are remote and harsh environments, and the use of tools is limited.
Therefore, most of the bolts used in the chemical industry need to control the strength, the use of torque control torque to achieve a predetermined torque and Angle, industrial fastening to ensure sufficient clamping force, to ensure the reliability of threaded connections.
Bolt fastening is a very complex physical process, the most important factors affecting bolt fastening are torque, preload, friction force, material hardness.
As long as the above factors are fully considered in order to ensure safe bolt fastening. Hydraulic wrenches can control the force applied to a thread fastening, no less, no more, in most cases, traditional torque wrenches have been able to provide sufficient precision tightening bolts.
However, when a more accurate and safer thread fastening is required, a manual torque wrench is not suitable, because often the applied torque does not meet the requirements of the preload force and the corresponding preset value, because it is not accurate. The source of inaccurate values is often caused by biting between tightening threads and friction between the bolt head and the plane of the fastened object. Hydraulic wrench is a suitable fastening tool.
The so-called preload force or clamping force is a contact pressure generated by the contact of the workpiece in the screw connection and is universal. The pressure increases the friction between the workpiece, and the friction prevents the torque from being fully pre-tightened, so only about 10% of the torque we apply can be converted into the tightening force of the bolt.
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